Posted by **chris ** on Thursday, March 22, 2012 at 10:31pm.

alex is x years old his sister is 3 years older , togerther their age is 57. what is the equation for this.

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**Reiny**, Thursday, March 22, 2012 at 11:46pm
x + x+3 = 57

- math -
**Jennifer**, Saturday, March 24, 2012 at 12:20pm
x+3=57

- math -
**Frontman**, Tuesday, May 28, 2013 at 2:10pm
54

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